It will be easier to use channel mode instead
For example:
Say your repeater is on 462.600
Arrow to REPT17
Say the CTCSS on both input & output is 100.0
Press Menu, then up arrow until you see R-CTCS OFF,
press menu again, up arrow until you see 100.0 HZ, press menu to confirm
Up arrow to T-CTCS OFF, press menu again, up arrow until you see 100.0 HZ, press menu to confirm
You should now be set up to use the repeater
The radio will automatically know the receive & transmit frequencies
and you have manually entered the CTCS tones
If the the repeater uses split different tones for input & output, the steps are the same,
just select the tones that you need