very easy Bot for game

I need very simple to make bot for a game called 'TROVE' from trionworlds. I will play 1 mainaccount and on the other accounts i need a bot to open friendslist pressing O and then click 'join' button so the character joins my maincharacter. this must happen every.. lets say every 7-12 seconds. Tell me if its possible to do this with like 3-4 characters on 1 computer. (tell me the moment you apply for the job.) I need this asap so quicker the better This should be very easy to program (see picture what i mean)