I would like to have grouped contacts so that I can seperate work / personal / other contacts,

I work for a search and rescue organization and I would like to be able to group all the contacts for that stuff together I downloaded this app as I need to be able to hear the call out texts so this app seems to work well in setting specific ringtones for each contact so I hear the texts at night but I would like to seperate those messages from work or personal ones as they can contain sensitive information.