How can I avoid adding the three plus signs, shown, that are not part of my design? What are they called? I'm using Ultiboard.

How can I avoid adding the three plus signs, shown, that are not part of my design? What are they called? I'm using Ultiboard.

| Ranking | Name | Answers |
|---|---|---|
| 1 | PCBWay Team | 5 |
| 2 | Lucas Perrone | 1 |
| 3 | Roberto Leonís | 1 |
| 4 | Aaron Williams | 1 |