Custom keyboard shortcuts in Texmaker

I find myself typing out

begin{gather*}
     text here, started by tab
end{gather*}

way more than i should be. I want to set a shortcut, namely ctrl+g, that would insert this text, and also place my cursor where ‘text here … ‘ starts, and haven’t found a way to do this in TexMaker. Is such a thing possible? If not the cursor bit, at least the text.