Where is the plug to put transmission in fluid located? An what type shoud I use?

My reference material says it is filled for life unless it is used under severe conditions. If that is the case, follow the instructions below

Drain
1. Raise and support the vehicle.
2. Place a suitable container under the transmission
3. Using the special tool, remove the transmission fluid filler plug.
Remove and discard the sealing washer.
4. NOTE: If an internal problem is suspected, drain the transmission fluid through a
paper filter. A small amount of metallic particles may be found from normal wear.
However, if excessive metallic particles are present, internal inspection may be
required.

Remove the transmission fluid drain plug.
Remove and discard the sealing washer.
5. Install the transmission fluid drain plug.
Install the new sealing washer.
Tighten to 8 Nm.

Refill
1. NOTE: Use transmission fluid meeting Jaguar specification.

Fill the transmission with 8 liters of transmission fluid through the transmission fluid filler plug hole.
2. Carry out a transmission fluid level check.

Transmission Fluid Level Check
Adaptor 307-452

1. The follow steps must be observed before starting the transmission fluid level check.
The vehicle must be on a horizontal ramp.
The parking brake must be applied.
The engine must be running for 2 minutes with the transmission selector lever in the 'P' position.

2. Connect the Jaguar approved diagnostic system.
3. Make sure the transmission selector lever is in the 'P' position.

4. NOTE: Make sure the transmission fluid temperature is below 30°C (86°F) on the Jaguar approved diagnostic system.

With the engine running and the foot brake applied, circulate the transmission fluid by:
Moving the transmission selector lever to the 'R' position.
Waiting for three seconds.
Moving the transmission selector lever to the 'D' position.
Waiting for three seconds.
Moving the transmission selector lever to the 'P' position.

5. Raise and support the vehicle.
6. Place a suitable container under the transmission fluid filler plug.
7. WARNING: Make sure that care is exercised near rotating parts. Failure to follow this instruction may result in personal injury.

With the engine running, remove the transmission fluid filler plug using the special tool.
Remove and discard the sealing washer.

8. NOTE: Use transmission fluid meeting Jaguar specification.

If the transmission fluid does not come out of the transmission fluid filler plug hole the transmission fluid level is insufficient. If this is the case add the transmission fluid in 0.5 liter units into the transmission fluid filler plug hole until fluid comes out

9. NOTE: Make sure the transmission fluid temperature does not exceed 50°C (122°F). If the transmission fluid temperature does exceed 50°C (122°F) stop the transmission fluid level check and allow the transmission fluid to cool until the temperature is below 30°C (86°F).

Allow the transmission fluid to drain from the transmission fluid filler plug hole until the flow almost stops.

10. Using the special tool, install the transmission fluid filler plug.
Install a new sealing washer.
11. CAUTION: Make sure the transmission fluid filler plug is tightened to the correct specification. Failure to follow this instruction may result in damage to the vehicle.

Using the special tool and a torque wrench, tighten the transmission fluid filler plug.
Tighten the transmission fluid filler plug to the torque given by the calculation.
To make sure the transmission filler plug is torqued to the correct specification. Using the special tool and a torque wrench the following calculation steps must be followed.
Step 1. Multiply 35 Nm by the effective length of the torque wrench (1).
Step 2. Add the effective length of the special tool (2) to the effective length of the torque wrench (1).
Step 3. Divide the total of step 1 by the total of step 2.
Step 4. Set the torque wrench to the figure arrived at in step 3.
Tighten the transmission fluid filler plug to the torque given by the calculation.

12. Remove the container.
13. Lower the vehicle.
14. Disconnect the Jaguar approved diagnostic system.

USE Automatic Transmission Fluid. Shell M1375.4

Pictures are attached below

On Hydra-matic 4L80-E and ZF 4HP 24E transmissions use Dexron III ATF on ZF 5HP 24 use Essco ATF LT 71141 only. There should be atag on thetrans to ID it. This may be a bigger problem than just a service though