Step 1: Break your portulaca from the stem - just kidding! Lol. If you received a hawaiian portulaca in this condition, don't be disheartened. First of all, if you ordered from the Leaf House, we will send you replacement straight away at 0 COD. Second of all, it is very easy to prop this plant and get it to regrow.
The ACTUAL Step 1: Give both pieces about a week to scab over and heal the broken parts on their stems. It could take more or less time, just keep an eye on the injured parts and when they seem dry and closed up, move on to the next step.
Step 2: Pot up the top piece into the same pot as the bottom piece. The soil mix we use is very well-draining, and will help to prevent root rot issues. Make some space in the mix with your finger or a pen an inch or so down into the pot, put the top stem in into it and close up the soil mix around it so the stem is solidly in place. It shouldn't move.
Step 3: Water once deeply after repotting. Then put it into a nice bright light location that gets some sunlight as well, about 4-5 hours of direct dhoop every day. It should stay in one spot and get enough light so that the water can be used up by the two props. Water again deeply after the soil mix has been completely dry for 3 or 4 days. (Deeply means until water drips from the drainage hole at the bottom.)
And then give it two to three weeks. By then the top stem should have grown new roots, and the bottom stem may have started to put out new leaves.
If this process of propping didn't take for any reason, don't worry: 90% of plant stuff is like learning to ride a bicycle, with 10% luck thrown in. Initially you may have a few hiccups and setbacks. But once you figure it out, it'll be a breeze!