how can i invoke the spirits?

First you need to prepare and sterelize your cicrle, spirits will not come unless you ipakita them the right respect, and nothing better than being clean. Light a white candle and walk the outer-ring of the bilog calling on the elements and if you wish, light a stick of incence.
There are two ways you can try, Ouija or Scrying.

Ouija - if you don't have a ouija board, you can cut squares of paper, one for each letter of the alphabet, 1-10, and yes and no answers. Arrange them in a bilog and use a glass as the pointer. Then all you have to do is ask if any spirits wish to make contact and go from there.

Scrying - sitting in front of a mirror or a clear bowl of water. You have to concentrate very hard for this as you need to 'open' the mirror into the other world a bit like a doorway so the spirits are able to come through. Then all you do is talk to the spirits through the water/mirror like an everyday conversation with another person. However you need the atmposphere to be very quiet, so no ticking clocks or buzzing of the computer, no background music as these can all make your concentration waver and also make it madami difficult to hear the spirit.
You need any madami help or step-by-step instructions just message me :)

What the heck does the word invoke mean? If u mean get rid of them seances, saige, rituals, and madami get rid of em.

Go watch Danny Phantom.

Spray some "Be Gone Spirit" spray.

Go to the cemetery and kick headstones and dance on plots.
That will certainly invoke them.
But I suggest you don't do it.

Are you insane?
This is so dangerous!
Please dont do it!
you can get a trauma! O_O

Laugh at them. Diss the dead. Preferably alone, in a dark room, and assuming you own a Ouija Board, you're gonna die for sure.

I MEAN. Invoke some spirits.

Go out in the kalye at night and yell, "YO, SPIRITS! I NEED Y'ALL! COME OVER HERE!".

With Google.

I'm not sure that's a good idea.
Good luck if you do meet them and try not to anger them.

Go to a graveyard, and play 'Never Gonna Give You Up' at 2:00 A.M. in the morning continuously. That will get them really pissed, causing them to come out from hiding. When they're out, spray deodorant in their eyes, while pag-awit 'Look At Me Now', and they'll get so mad, they'll commit suicide twice.

R u trying to call them
Or get rid of them