Grouting a small hole with a spatula and putty is quite simple. Just fill the hole well after removing the dowel (if present) by pulling it out with a pliers or pushing it into the wall using a screwdriver.

But it may happen that large holes are formed and in this case the affair is little complicated.

In fact, it will be necessary, before grouting, to insert a small ball of very compressed paper and then stucco.

In any case with dry putty or after a few hours it will be good to level the stucco with a fine glazed carat.