I am looking for some help as to how to think about populating our Microsoft Enterprise Agreement in ServiceDesk Plus Cloud. 

We have M365 E3 which has license for Office & Windows. 

We have O365 E1 which has license to cloud version of Office

We have older version of office that we haven't upgraded yet but will soon. 

Are we best to use Software Suites and bring in all the older software under the single Software Suite? 

Anyone gone through this and have some experience to share? 

Thanks!