[Koha] How do I issue periodicals in koha?

I have a library where I have over 100 periodicals, some are monthly, some weekly. My library lends periodicals with a specific charge. how do i set it up in koha? Specifically, how do I issue periodicals to borrowers?? I have done the following steps: -set up a budget -set up a supplier -added a subscription -created a rule for issue numbering -"received" a few issues After that I have hit a block and am not able to figure out how to lend out the periodicals to borrowers. Please let me know how to proceed on this! Thanks, Venita.