Actions with this trait allow you to follow up earlier attacks.
Kind
General trait
Also printed in
Player Core 2 p139
Actions with this trait allow you to follow up earlier attacks. An action with the press trait can be used only if you are currently affected by a multiple attack penalty. You can't use a press action when it's not your turn, even if you use the Ready activity. Some actions with the press trait also grant an effect on a failure. The effects that are added on a failure don't apply on a critical failure. If your press action succeeds, you can choose to apply the failure effect instead. (For example, you may wish to do this when an attack deals no damage due to resistance.)
General
Press is one of 112 general.
Source: Pathfinder Player Core, p. 139
Bring Press into a Pathfinder 2e game with The DM Screen.