I have no clue, please help

[TerriScheff]

Newbie - trying to crochet throw in granny squares.  All going well until I get to round 5 in this pattern.  https://www.redheart.com/files/patterns/pdf/WR1713.pdf

 

Instructions read (slip st, ch 2, slip st) in the chain-2 space.  Slip stitch?  The only slip stitches I have used are to join new thread, or make rings?  What & where do I slip stitch?  

Very confused, & I surely appreciate the help!  Thanks Terri

 

[bgs]

This has good info on reading patterns 

https://www.craftyarncouncil.com/standards/how-to-read-crochet-pattern 

This one explains various ways ch spaces can be made and has a picture

https://www.crochetspot.com/what-is-a-chain-space-ch-sp/ 

Your slip stitch would be made the same but you are putting your hook into the space or hole below the 2 chains in the previous row and making your stitch around those chains as opposed to working the stitch into the chains.

 

[TerriScheff]

Thank you that helps a lot!  I just couldn't figure out where the slip stitch would GO - below the 2 chains, and the reference info is vary helpful, as well.  Thanks!