If you mean in the ghoul room then you can't delete powers, if a ghost can have 2 diffrent powers in a slot and you buy one you can then select that slot again to change it to the other option.
This might not work if you launched the game incorrectly, when you're in the launcher you can only select 1 option (except for Bug fixes and Extras, these shoul always work) otherwise some stuff will not work properly.
Good Morning/Afternoon/Evening everyone! I am HBG, aka Radio, aka god knows what else, and I'm posting this here because even with the discord server's popularity in the community, I know that there are some people who still prefer to use the Forums, and the goal is to get this to as many potential people as possible.
I am here as a member of the Ghost Master Complete Edition Team to provide the link to the brand new Team Applications that have just opened up today, as well as a link to the discord for anyone who hasn't yet found or heard of it.