Are you looking to draw up a will according to Swiss law (where mandatory inheritance applies) or are y ou claiming Heimatrecht to settle your estate according to your own country's law?
If the latter, the easiest thing to do is to have the will drawn up in your home country, and see the Gemeinde notary to deposit a Heimatrecht declaration - a simple letter, handwritten, stating your intention.
I hadn't thought that far ahead. I'm Irish and have recently separated from my life but I intend to live here in Switzerland. I want to draw up a new will and at the moment, the people involved are family in Ireland. So, I guess it is best to make one back there?
Under Swiss law, you are not free to leave you assets as you wish; how your estate is divided among surviving relatives is defined in law. See the inheritance chart and explanation on pages 25-33 here: http://www.bj.admin.ch/content/dam/d...eherecht-d.pdf
If you are not a Swiss citizen, you can claim Heimatrecht, thus allowing you to write your will according to your own country's laws, settle your estate in whatever way you wish.
But if you are a Swiss citizen, you must follow Swiss inheritance law.