Cup match and League matches mixed together

I have a league where teams compete in cup matches outside of the league (county cups) where the teams in my league play teams from other leagues. I've setup the competition and added the clubs, but was wondering if there was a way to add "Temporary teams" similar to temporary referees.

Also, if it's possible to display these matches mixed in with our league matches on one matches shortcode, which displays all the matches for each of our divisions

For more context. My league has 4 divisions (Prem, Div 1, Div 2, Div 3), we have 2 cup tournaments within our league and some teams play in county cup tournaments. If a team in my prem division plays in a county cup, I'd like to be able to show these on the matches shortcode along with the league matches, in chronological order. Currently I do this by adding 2 shortcodes, but the one that shows the county cup one shows all of the matches, regardless of whether the team is in the prem, Div 1, Div 2 or Div3. I’d like to split it out so it only shows the matches for the teams in a specific division, as I have different pages that filter out the matches per division.

Is this possible?