There is a tool now a lot cheaper than it was but if you're like me you like it the hard way lol.
You can use anything small and flat enough to fit 2 of the previous on each side of the wire so you can push back the tab retainer at the bottom of the hole.If you look closely you can see the first two on the side of the connector when you wiggle it up and down
Oh yes, i use flattened seringe needles with the tip cut off of course surgical stainless steel bends well

You can also find the tool cheap in my sig but it's a canadian store without a branch in the USA