How to check transmission fluid level

JATCO A/T - Drain & Refill
WARNING:Use extreme care when draining transmission fluid as the fluid is VERY hot.

NOTE:Transmission fluid should be drained with transmission at normal operating temperature.

Raise and support vehicle. Apply parking brake and position chocks under front and rear wheels. Remove underbelly panel. See UNDERBELLY PANEL under REMOVAL & INSTALLATION.
Position suitable container under transmission. Clean area around drain plug. See Fig. 4 .

Remove drain plug and discard sealing washer. Allow fluid to drain.
Clean drain plug and install NEW sealing washer. Install drain plug and tighten to specification. See TORQUE SPECIFICATIONS.
Clean area around filler plug. See Fig. 2 .

Remove filler plug. Add correct amount of fluid through transmission filler hole. See FLUID CAPACITIES .
Clean and install filler plug. Check and top off fluid level. See CHECKING FLUID LEVEL . Install underbelly panel. See UNDERBELLY PANEL under REMOVAL & INSTALLATION.
Fig. 4: Removing Transmission Drain Plug & Sealing Washer
Courtesy of LAND ROVER NORTH AMERICA, INC.
FLUID CAPACITIES
FLUID CAPACITIES
ApplicationPts. (L)
Intermediate Reduction Drive2.3 (1.09)
JATCO A/T7.4-8.5 (3.50-4.00)

RECOMMENDED FLUID
CAUTION:Use of fluids other than those specified may result in serious damage to components.

RECOMMENDED FLUID
ApplicationFluid Description
JATCO Automatic TransmissionTexaco N402
Intermediate Reduction Drive (IRD)(1) Texaco S5 75W90 Synthetic Oil
(1)Or equivalent with API GL5 specification.

So leaking transmission fluid or? Can you snap a picture or shoot a video of what the problem is and upload it in your reply? That way we can see what you are talking about.