I have a quick update on the Schedule Maintenance Mode RESKIT Tool, also some information \ best practices.
Do not go beyond 20 Jobs scheduled. Anything over this will start to place too much load on your Root Management Server
Do not schedule more then 20 items in one Job. If you need to go over this please create a group and target this. Note: The MP has a bug that only limits you to select up to six objects. I have attached an updated MP that corrects this issue below.
When scheduling a group make sure to select system.group then select the group. If you select the group itself the tool lists the individual group membership.
A common issue with our international customers is a date time casting exceptions or the schedule is not landing on the correct day. This tool was designed and tested on EN-US only. I cannot make any promises but I will look into extending this to support other locals in the future. The work around is to install the Windows EN-US language pack.