PowerPoint's POTM templates can be used as basis for created new presentations in PPSM format simply by opening the template and saving it in new format.
Convert Microsoft PowerPoint macro-enabled Open XML template to Microsoft PowerPoint macro-enabled Open XML complete slide show.
We have found 2 software records in our database eligible for .potm to .ppsm file format conversion.
Microsoft Windows software - convert potm to ppsm on Windows
A presentation program from the Microsoft Office suite
Convert from potm file format
The tables with software actions are a good pointer for what a certain program does with various file types and often may give users a good hint how to perform certain file conversion, for example the above-mentioned potm to ppsm. However, it is not perfect and sometimes can show results which are not really usable because of how certain programs work with files and the possible conversion is thus actually not possible at all.
Apple macOS / Mac OS X software - convert potm to ppsm on OS X
Mac version of popular presentation software from Microsoft