You will need to program both the frequencies and talkgroups for the p25 system. (Alternatively, you can scan in open mode if you don’t program the talkgroups). Below are relevant portions from the pro96 cheat sheet in the wiki.
wiki.radioreference.com
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Storing known trunked frequencies
1. Press MANual, Press three digits to get the bank and channel number desired then Press MANual again. (Upper left should read Mxxx for your bank and channel number)
2. Press PGM, (upper left should change from M to P)
3. Press TRUNK
4. Press MODE until Motorola or EDACS is displayed for the appropriate trunk type. (Motorola for P25)
5. Press PGM
6. Enter the frequency
7. Press Enter
8. Repeat steps 5 through 8 until all frequencies are entered in selected bank.
Note: 1. EDACS frequencies are never programmed in the 00 channel in any bank and must be programmed in the correct listed LCN as listed in the reference you are using.
2. Motorola requires only the control channels entered.
3. More than one trunk system may be stored in a bank, provided it is seperated by another conventional channel
Storing known Talkgroup ID’s
1. Press PGM
2. Press TRUNK
3. Enter the 5 digit Mot or 4 digit ED ID
4. Press ENTER
5. Press Up button
6. Repeat steps 3, 4 and 5 until all are entered.
Storing known Text Tags
1. Press Manual, Press three digits to get the bank and channel number desired then Press Manual again. (upper left should read Mxxx for your bank and channel number)
2. Press PGM, (upper left should change from M to P)
3. Press Text, the cursor appears on line 3.
4. Using the numbered keys text in the line up to 12 characters. The letters above each number will help in the selection. Example, POLICE DISP (11 characters counting the space)
The first letter is P, Press the number 7 then the number 1 for P. (7 will open the four numbers PQRS and by selecting 1 is for the first of these four. A 7 then 2 would get the letter Q. Presses up or down to move the courser back and fourth or to correct a mistake.
5. Press Enter