How were Scottish lighthouse keepers selected?

Scottish lighthouse keepers were protected from the brutal activity of the press-gang by a medal and ticket^[1]. My grandfather felt that they should have a uniform 'to raise him in his own estimation, and in that of his neighbour, which is of consequence to a person of trust'^[1]. He also notes that 'the keepers...are attended to in all the detail of accommodation in the best style as shipmasters; and this is believed to have a sensible effect upon their conduct, and to regulate their general habits as members of society'^[1].

My grandfather's view was that 'the lightkeepers, agreeing ill, keep one another to their duty'^[1]. Those chosen were also made to understand that they 'must therefore take a different view of your duties as a lightkeeper' and maintain cleanliness^[1].