Reports - merging data columns in matrix

Hi, 

I need help with merging columns in matrix. I use MS SQL 2012. I need merge data columns, here is example:

matrix:

+-----------+----------+
|               |  [time]  |
+-----------+----------+
|               |  [step]  |
| [project] +----------+
|               | [action] |
+-----------+----------+

current output:

+-----------+----------+----------+----------+----------+
|               |   00:00 |   00:05  |   00:10  |  00:15  |
+-----------+----------+----------+----------+----------+
|               |  step 1  |  step 1  |          |  step 2  |
| project 1 +----------+----------+----------+----------+
|               |  start     | running  |          |  start   |
+-----------+----------+----------+----------+----------+
|               |              |  step 1  |  step 1  |  step 1  |
| project 2 +----------+----------+----------+----------+
|                |             | start    | running  |  running |
+-----------+----------+----------+----------+----------+

demanded output:

+-----------+----------+----------+----------+----------+

|               |   00:00  |   00:05  |   00:10  |   00:15  |
+-----------+----------+----------+----------+----------+
|               |        step 1          |              |  step 2  |
| project 1 +----------+----------+----------+----------+
|                |  start    | running  |            |  start    |
+-----------+----------+----------+----------+----------+
|                |             |            step 1                     |
| project 2 +----------+----------+----------+----------+
|                |              | start    |       running       |
+-----------+----------+----------+----------+----------+

Thanks in advance :-)

Regards