Chess Club ladder - compatible to MAC

Hi all,

I've set up a Chess Club for residents of a refugee camp, we have a space that can hold 14-18 players. We are still in the preliminary stages, three trial classes which have had full capacity, but I'd like to have a chess ladder that allows me to input the results and a 'league table' is produced.

I've read some great articles about different software/engines people are using at the moment, but most seem to be compatible to Windows/PC only. I'm using a Mac laptop and I was wondering if anyone had a link to some software or an excel add-on ( I have Microsoft Office on my MAC).

We have a range of players from complete beginners to advanced, so what rating to allocate is another query.

I'm happy to create an Excel doc manually, so if anyone has a walkthrough video or handbook, please do share.

Any information or advice would be welcome. 

Thanks in advance.