Last I looked, both Seagate and WD have free versions of what apparently is Acronis for download from their websites. It is, respectively, their free disk utility and cloning software customized for use with their hardware only. For example, the Seagate utility Disk Wizard is based on Acronis True Image but will make clone copies TO a HDD only made by them (it does not care whose old HDD you are using as the SOURCE drive). Likewise, some of its HDD manipulation tools may not work on another maker's drive unit. The similar utility from WD is their Actonis True Image WD Edition.
So, if you can arrange to ensure that the utility you help your seniors install is the correct one for the HDD they will use as the DESTINATION drive for their cloning, you can use the correct one of those. If their use, instead, is manipulating their existing drive (not cloning), you might need to check more carefully about which version will do the job for their existing drive units.