Octavius was eating his lunch in the back. He generally didn't put up a sign, closing the shop for even that hour. If someone came in, he would hear the bells and interrupt his lunch for that. The only time he would close the store abruptly, is if something happened to his daughter. Hell even then he might call Lavender and ask if she could watch the shop.
Wiping his mouth, Octavius stood up and walked out to the front of the shop. A smile crossed his lips as he saw Jocelyn. "My favorite customer." he said in a cheery tone. "I'm glad to see you again, Joss."