1. Go to the teams tab. Write down the GID of the team(s) you want the jersey of and the team(s) you want to assign jerseys to.
2. Go to the jerseys tab and create a filter where GID = Pistons (019 or 20?) or scroll down to the GID for the team whose jersey you want.
3. That should bring up like 4 to 10 jerseys pending on the team. There is a texture code to the far left of the table, should read like ua020 or rh012. The second letter is generally a or h for away or home and the series of numbers corresponds to the Team ID. Copy or write down those jersey textures of interest. Each real team has practice h+a, normal h+a, some have alternates, christmas day, up to four retros h+a and others.
4. Create a Filter or scroll down to the team whose jersey you want to replace. copy those jersey textures into the appropriate fields for home+away.