This is interesting from the Elections Office web page.
Na Hearadh agus Ceann a Deas nan Loch By-Election: Thursday 8 October 2020
Polling Stations will be open from 7.00am to 10.00pm.
Additional hygiene measures will be in force at this By-Election:
• Electors are encouraged to wear face coverings and will be asked to maintain social distancing.
• Hand sanitiser will be available at the entrance to each polling station and on exit.
• Please leave the Polling Station as soon as you have cast your vote.
• Each Polling Station will have been deep cleaned, prior to Polling Day.
• Individual Ballot Pencils will be issued to each elector (electors may bring their own pencil/pen)
• Polling booths will be santitised after each elector has voted.
• Regular cleaning of door handles, light switches, corridor areas, etc will take place throughout the day.
I cannot however find any info on polling stations - how many and where.