Crochet Pattern: Working with Chain Stitches and Double Crochets

The quantity of stitches is a multiple of 4 plus 1 plus 2 chain stitches for increases.
Row Instructions
1st Row
Skip 3 chain stitches (this counts as 1 double crochet), *work 2 center double crochets (Cdc) over the next 3 chain stitches, 1 double crochet into the next chain; repeat from * to end, then turn.
2nd Row
Begin with 3 chain stitches (counting as 1 double crochet), then make 1 double crochet into the first stitch. Skip 1 double crochet, *1 double crochet into the next chain, work 2 center double crochets over the next 3 double crochets, repeat from * ending with 1 double crochet into the last chain, skip 1 double crochet, and make 2 double crochets into the top of the turning chain; turn.
3rd Row
Begin with 3 chain stitches (counting as 1 double crochet), skip 1 stitch, *work 2 center double crochets over the next 3 double crochets, then 1 double crochet into the next chain; repeat from * ending the last repeat into the top of the turning chain, then turn.
Repeat Instructions
Continue repeating the instructions for the 2nd and 3rd rows as needed.
can you explain to me how to do the 2Cdc stitch.
The 2 Double Crochet Cluster Stitch (2 dc-cl)
youtu.be/344KvkB6SDI
Thank you for helping!
your welcome : )